Design and Application of Simple Shear Liquefaction Box

    Volume 36, Issue 3 (May 2013)

    ISSN: 0149-6115

    CODEN: GTJOAD

    Published Online: 22 March 2013

    Page Count: 9


    Eseller-Bayat, E.
    Assistant Professor, Istanbul Technical Univ., Istanbul,

    Gokyer, S.
    Ph.D. Candidate, Northeastern Univ., Boston, MA

    Yegian, M. K.
    Professor, Northeastern Univ., Boston, MA

    Ortakci, E.
    Senior Staff Engineer, Parikh Consultants, Oakland, CA

    Alshawabkeh, A.
    Professor, Northeastern Univ., Boston, MA

    (Received 23 February 2012; accepted 5 March 2013)

    Abstract

    A cyclic simple shear liquefaction box (CSSLB) was designed and manufactured to allow laboratory testing of saturated sands under cyclic or transient strain-controlled conditions. The box accommodates pore water pressure transducers, linear variable displacement transducers, and bender elements and bending disks. To induce shear strains, the box has two rotating walls connected to two translating rigid walls with a flexible sealant. When the tops of the rotating walls are fixed against translation and the base of the CSSLB, which rests on a shaking table, is excited with a displacement time history, shear strains are induced in a soil specimen. Two-dimensional numerical analyses of plan and elevation sections of the CSSLB were performed, demonstrating that the design of the box and the mechanism for shearing can induce controlled shear strains in sand specimens with minimal boundary effects. Example test results from sand specimens subjected to cyclic and earthquake shear strain time histories are presented and illustrate how well the CSSLB with its instrumentation is suited for conducting tests on relatively large soil specimens.


    Paper ID: GTJ20120025

    DOI: 10.1520/GTJ20120025

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    Author
    Title Design and Application of Simple Shear Liquefaction Box
    Symposium , 0000-00-00
    Committee D18